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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Post
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  include Msf::Auxiliary::Report
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  def initialize
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    super(
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      'Name' => 'Windows Manage Proxy Setting Cloner',
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      'Description' => %q{
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        This module copies the proxy settings from the current user to the
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        targeted user SID, supports remote hosts as well if remote registry
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        is allowed.
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      },
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      'Author' => [ 'mubix' ],
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      'License' => MSF_LICENSE,
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      'Platform' => [ 'win' ],
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      'SessionTypes' => [ 'meterpreter' ],
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      'Compat' => {
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        'Meterpreter' => {
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          'Commands' => %w[
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            stdapi_registry_create_key
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            stdapi_registry_open_key
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            stdapi_registry_open_remote_key
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          ]
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        }
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      }
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    )
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    register_options(
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      [
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        OptAddress.new('RHOST', [ false, 'Remote host to clone settings to, defaults to local' ]),
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        OptString.new('SID', [ false, 'SID of user to clone settings to, defaults to SYSTEM', 'S-1-5-18' ])
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      ]
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    )
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  end
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  def parse_settings(data)
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    print_status "\tProxy Counter = #{data[4, 1].unpack('C*')[0]}"
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    case data[8, 1].unpack('C*')[0]
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    when 1
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      print_status "\tSetting: No proxy settings"
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    when 3
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      print_status "\tSetting: Proxy server"
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    when 5
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      print_status "\tSetting: Set proxy via AutoConfigure script"
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    when 7
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      print_status "\tSetting: Proxy server and AutoConfigure script"
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    when 9
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      print_status "\tSetting: WPAD"
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    when 11
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      print_status "\tSetting: WPAD and Proxy server"
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    when 13
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      print_status "\tSetting: WPAD and AutoConfigure script"
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    when 15
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      print_status "\tSetting: WPAD, Proxy server and AutoConfigure script"
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    else
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      print_status "\tSetting: Unknown proxy setting found"
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    end
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    cursor = 12
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    proxyserver = data[cursor + 4, data[cursor, 1].unpack('C*')[0]]
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    print_status "\tProxy Server: #{proxyserver}" if proxyserver != ''
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    cursor = cursor + 4 + data[cursor].unpack('C*')[0]
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    additionalinfo = data[cursor + 4, data[cursor, 1].unpack('C*')[0]]
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    print_status "\tAdditional Info: #{additionalinfo}" if additionalinfo != ''
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    cursor = cursor + 4 + data[cursor].unpack('C*')[0]
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    autoconfigurl = data[cursor + 4, data[cursor, 1].unpack('C*')[0]]
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    print_status "\tAutoConfigURL: #{autoconfigurl}" if autoconfigurl != ''
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  end
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  def target_settings(dst_root_key, dst_base_key)
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    if datastore['RHOST']
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      begin
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        dst_key = session.sys.registry.open_remote_key(datastore['RHOST'], dst_root_key)
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      rescue ::Rex::Post::Meterpreter::RequestError
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        print_error("Unable to contact remote registry service on #{datastore['RHOST']}")
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        print_status('Attempting to start service remotely...')
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        begin
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          service_start('RemoteRegistry', datastore['RHOST'])
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        rescue StandardError
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          print_error('Unable to read registry or start the service, exiting...')
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          return
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        end
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        startedreg = true
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        dst_key = session.sys.registry.open_remote_key(datastore['RHOST'], dst_root_key)
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      end
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      dst_open_key = dst_key.open_key(dst_base_key)
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    else
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      dst_open_key = session.sys.registry.open_key(dst_root_key, dst_base_key)
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    end
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    dst_values = dst_open_key.query_value('DefaultConnectionSettings')
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    # If we started the service we need to stop it.
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    service_stop('RemoteRegistry', datastore['RHOST']) if startedreg
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    dst_data = dst_values.data
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    print_status('Current proxy settings for target:')
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    parse_settings(dst_data)
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  end
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  def run
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    if (datastore['SID'] == '') && !datastore['RHOST']
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      print_error('No reason to copy the settings on top of themselves, please set a SID or/and RHOST')
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      return
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    end
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    # Pull current user's settings
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    src_root_key, src_base_key = session.sys.registry.splitkey('HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\Connections')
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    src_open_key = session.sys.registry.open_key(src_root_key, src_base_key)
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    src_values = src_open_key.query_value('DefaultConnectionSettings')
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    src_data = src_values.data
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    print_status('Proxy settings being copied:')
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    parse_settings(src_data)
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    # Print current settings of target
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    print_status('Attempting to read target\'s settings...')
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    if datastore['SID']
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      dst_root_key, dst_base_key = session.sys.registry.splitkey("HKU\\#{datastore['SID']}\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\Connections")
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    else
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      dst_root_key, dst_base_key = session.sys.registry.splitkey('HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\Connections')
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    end
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    target_settings(dst_root_key, dst_base_key)
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    print_status('Cloning... bahh..')
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    if datastore['RHOST']
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      begin
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        dst_key = session.sys.registry.open_remote_key(datastore['RHOST'], dst_root_key)
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      rescue ::Rex::Post::Meterpreter::RequestError
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        print_error("Unable to contact remote registry service on #{datastore['RHOST']}")
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        print_status('Attempting to start service remotely...')
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        begin
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          service_start('RemoteRegistry', datastore['RHOST'])
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        rescue StandardError
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          print_error('Unable to read registry or start the service, exiting...')
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          return
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        end
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        startedreg2 = true
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        dst_key = session.sys.registry.open_remote_key(datastore['RHOST'], dst_root_key)
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      end
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      dst_open_key = dst_key.create_key(dst_base_key, KEY_WRITE + 0x0000)
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    else
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      dst_open_key = session.sys.registry.create_key(dst_root_key, dst_base_key, KEY_WRITE + 0x0000)
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    end
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    # If we started the service we need to stop it.
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    service_stop('RemoteRegistry', datastore['RHOST']) if startedreg2
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    dst_open_key.set_value('DefaultConnectionSettings', REG_BINARY, src_data)
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    print_status('New settings:')
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    target_settings(dst_root_key, dst_base_key)
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  end
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end
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